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J. KROOG. MEANS PORl PAGKINGTEE GONDUITS IN FILTER PRESSES.

NCL-370,741. Patented Sept. Z7, 1887.

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J. KROOG. MEANS FR :PACKING THB GONDUITS IN FILTER PRI'SSES,I No. 370,741. Patented Sept. Z7

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UNITED STATES PATENT OFFICE.

JOHANN KROOG, OF HALLE-ON-THE SAALE, PRUSSIA, GERMANY.

MEANS .FOR PACKING-THE CONDUITS IN FILTER-PRESSES.

SPECIFICATION forming part of Letters Patent No. 370,741, dated September 27, 1887.

Application iiled March 16, 1887. Serial No. 231,151. (No model.) Patented in Germany December 7, 1882, No. 22,796; in France December 19, 1882, No. 152,747; in Belgium April 3, 1884, No. 64,727, and in AnstriasHungary May 6, 1885, No. 3,294 and N0. 23,660.

T0 all whom/ it may concern.' through small cocks arranged on all the plates Be it known that I, JOHANN KRooG, of the p and p. As this canal s must be in comcity of Halle-on-the-Saale, in the Kingdom of munication with the interior of the frames by Prussia and German Empire, have invented a means of smalltransverse canals or conduits 5 certain new and useful Improvement in the s', the rubber rings e are in this case to be ar- 5 Means for Packing the Conduits in Filterranged in the larger apertures of the plates p Presses, (for which I have obtained patents in and p. The edulcorating or lixiviating canal Germany, dated December 7 1882, No. 22,796; formed by the apertures w in the plates and in France, dated December 19, 1882, No. frames in its turn communicates with the inio 152,747 5 in Belgium, dated April 3, 1884, No. terior of 'the plates p. The rubber packing- 6c 64,727, and in Austria-Hungary, dated May rings for this canal are therefore arranged in 6, 1885, No. 3,294 and No. 23,660,) of which the correspondingly-larger apertures of the the following is a speciiication, reference beframe r. ing had' to the accompanying drawings, and The entire arrangement of plates and frames 1 '5 to the letters of reference marked thereon. and of the rings in the conduits w and s will 65 This invention relates'to improvements in be better understood by reference to Figs. 7 the means for packing the conduits in tilterand 8, respectively, it being also noticed that ing-presses, its object being to secure the the head-pieces K and L are provided with greatest possible degree of density in the sesmaller (half-size) rubber rings e. A 2o ries of corresponding apertures in the plates In the arrangement shown in Figs. 4, 5, and 7o and frames of filtering-presses, which, by be- 6 the inlet-conduit for the mass to be iiltered ing tted closely upon each other, form the is formed by the apertures m in the plates P conduits or canals.. v P and the frames R of a futering-press, the My invention therefore consists in forming outlet-conduits for the filtered liquid, on the 25 the corresponding apertures in the plates and other hand, being formed by the apertures u 75 frames of filtering-presses alternatelylarge and and o. vThe rubber rings for the conduit m small and providing the larger apertures with are therefore arranged in the apertures of the rubber packing-rings, the end surfaces of plates P P', and also the smaller rings in the which project a little at both sides of the said headpieces M and N. The rubber rings for 30 apertures. the conduits u and o are in turn arranged in 8o In the accompanying drawings, forming the apertures of the frames R. part o f this speciication, Figures 1, 2, and 3 The sectional detail views, Figs. 9 and 10, are views of the plates and frames, respectwill make the above-described arrangements n ively, of filtering-presses, showing one way of suiiiciently clear, the former as regards the 3 5 arranging the inlet and outlet conduits in iilconduit o, and the` latter as regards the con- 8 5l tering-presses. Figs. 4, 5, and 6 are Views of duits 'm and u, arranged the one above the the plates and frames, respectively, of lterother. ing-presses, showing a modified arrangement The rubber rings should in all cases project of the inlet and outlet conduits. Figs. 7 and sufficiently far to touch the adjoining frames 4o 8 are sectional detail views showing the arorplateswhenthe platesandframesarepressed 9o rangement of the conduits as described with tightly together in the press. The stronger reference to Figs. 1, 2 and 3; and Figs. 9 and the pressure is the tighter will the end sur- 10 are sectional detail views showing the arfaces of the rubber rings be pressed against rangement as described with reference to Figs. the adjoining surfaces-to be packed, because t5 4, 5, and 6. Figs. 7 to 10, inclusive, are drawn the inner surfaces of the rubber rings are sub* 95 on an enlarged scale. l jected to the pressure prevailing within the In the arrangement shown in Figs. 1, 2, and conduits when the filtering-press is in use. 3 the apertures s in the plates p and p and Having thus described my invention,what I frames r form the inlet-conduit for the mass claim as new, and desire to secure by Letters 5o to be filtered, the iiltered liquid being let off Patent, is rco The combination of the filtering frames and l In testimony whereof I have signed my name plates arranged side by side and the latter to this specification in the presence of two sub- 1o provided alternately with large and small conseribing witnesses. duitapertures, and the elastic packing-rings 5 arranged in the larger apertures of the plates and projecting at the opposite sides thereof to bear against the adjacent plates, substantially as described.

JOHANN KROOG.

Witnesses:

A. DHEUREUsE, EMIL XVOLF. 

